#include <sys/times.h>
#include "../ourhdr.h"

static void pr_times(clock_t, struct tms *, struct tms *);
static void do_cmd(char *);

int main(int argc, char *argv[])
{
    int i;
    for(i=1;i<argc;i++)
    {
        do_cmd(argv[i]);
    }
    exit(0);
}

static void do_cmd(char *cmd)
{
    struct tms tmsstart, tmsend;
    clock_t start, end;
    int status;
    fprintf(stderr, "\ncommand: %s\n", cmd);

    if((start = times(&tmsstart))==-1)
    {
        err_sys("times error");
    }
    if((status = system(cmd))<0)
    {
        err_sys("system() error");
    }
    if((end = times(&tmsend))==-1)
    {
        err_sys("times error");
    }

    pr_times(end-start,&tmsstart,&tmsend);
    pr_exit(status);
}

static void pr_times(clock_t real, struct tms *tmsstart, struct tms *tmsend)
{
    static long clktck = 0;
    if(clktck == 0)
    {
        if((clktck=sysconf(_SC_CLK_TCK))<0)
        {
            err_sys("sysconf error");
        }
    }
    fprintf(stderr, " real: %7.2f\n", real / (double) clktck);
    fprintf(stderr, " user: %7.2f\n", 
        (tmsend->tms_utime- tmsstart->tms_utime) / (double) clktck);
    fprintf(stderr, " sys: %7.2f\n", 
        (tmsend->tms_stime- tmsstart->tms_stime) / (double) clktck);
    fprintf(stderr, " child user: %7.2f\n", 
        (tmsend->tms_cutime- tmsstart->tms_cutime) / (double) clktck);
    fprintf(stderr, " child sys: %7.2f\n", 
        (tmsend->tms_cstime- tmsstart->tms_cstime) / (double) clktck);

}